Pick up your kitchen timer, grab a project... new or old. Tell yourself that you are going to work on this for 15- 30 minutes. Set the timer and Just Do It!
You will be surprised that after the time goes by... you still want to work. It's the getting started that's hard. If you do this every day, or every other day you will be amazed at what you get completed. One you see some progress, you will feel better.
I find myself sometimes sitting here at the computer reading way, way too much. I have been known to set the timer for this forum too.
I use my kitchen wind up timer more in my sewing room than in the kitchen.
Hope this works for you.